How do I make picture marker symbols with smoother lines and edges?
I have created a number of picture marker symbols that are circles divided into three sections. Each section of the circles contains one of three colors. I created the symbols as bmp files in Paint. When I use the symbols in a style the lines and edges are not smooth. How do I make picture marker symbols with smoother lines and edges?
Mapping Center Answer:
There are a couple things you could do:
1. Make the .BMP files much larger. Instead of 64 x 64 pixels, for instance, you could go with 360 x 360 pixels. The reason this will work is that unless you're displaying your markers at actual resolution, they are being re-sampled for display. As you're noticing ArcMap's resampling of raster picture markers is not particularly sophisticated. So, if you need to use these symbols at a variety of sizes, e.g., proportional symbol symbology, bitmap markers are definitely not the way to go.
2. Instead of using .BMP, use a vector drawing that is saved to .EMF format. You can use .EMF files for picture markers and they will scale nicely. If you're wondering what software to use, try ArcMap. Just use an empty map, go to layout view, move the empty data frame off the page and start drawing. Set the page size to be as close to the exact extant of your drawing as possible. Export your drawing to a .EMF file. Then create a new picture marker symbol with that drawing.
If you would like to post a comment, please login.